Add irrelevant-files to monasca-tempest-base job
Add irrelevant-files to monasca-tempest-base job

Documentation changes should be ignored by tempest tests.

Change-Id: I7cd967e818a2d5460b62b4fe9383033dff3915fd

openstack/monasca-api,stackforge/monasca-api,openstack/monasca-api,openstack/monasca-api,stackforge/monasca-api,stackforge/monasca-api,stackforge/monasca-api